Climate averages 1991–2020
Prague weather
in September.
A mild, moderately wet month: the 4th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Prague: daytime highs average 19.7°C and nights cool to about 11.0°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 56 mm of rain on roughly 9 days, which makes September a moderately wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 40 min on an average September day.
The nearest other city in this atlas is Ústí nad Labem (69 km away). In September its highs average 19.1°C, 0.6°C cooler than Prague, with 61 mm of rain.
Among the 12 cities listed in Czechia, Prague ranks 1st of 12 for the warmest September highs and 2nd of 12 for the driest September (rainfall, lowest first). The mean September high of those 12 cities is 18.8°C; Prague is 0.9°C warmer than that mean.
From September to October, average highs fall by 5.6°C to 14.1°C, and monthly rainfall falls from 56 mm to 44 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Prague climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 3.1°C-2.4°C | -2.4°C | 37 | 9.6 | 8.69 h |
| February | 5.0°C-2.1°C | -2.1°C | 32 | 8.3 | 10.010 h |
| March | 9.3°C0.7°C | 0.7°C | 43 | 10.8 | 11.812 h |
| April | 14.8°C4.4°C | 4.4°C | 38 | 9.5 | 13.714 h |
| May | 19.1°C9.2°C | 9.2°C | 68 | 12.7 | 15.415 h |
| June | 22.4°C13.0°C | 13.0°C | 79 | 12.3 | 16.316 h |
| July | 24.6°C15.1°C | 15.1°C | 80 | 12.8 | 15.916 h |
| August | 24.8°C15.0°C | 15.0°C | 73 | 10.8 | 14.514 h |
| September, selected | 19.7°C11.0°C | 11.0°C | 56 | 8.9 | 12.713 h |
| October | 14.1°C6.6°C | 6.6°C | 44 | 9.5 | 10.811 h |
| November | 8.0°C2.3°C | 2.3°C | 40 | 8.9 | 9.19 h |
| December | 4.0°C-1.0°C | -1.0°C | 41 | 9.5 | 8.28 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Ústí nad Labem in SeptemberCzechia · 69 kmHigh 19.1°C · Low 11.0°C · 61 mm rain
- Pilsen in SeptemberCzechia · 84 kmHigh 18.9°C · Low 10.1°C · 54 mm rain
- Liberec in SeptemberCzechia · 88 kmHigh 17.7°C · Low 10.3°C · 78 mm rain
- Pardubice in SeptemberCzechia · 97 kmHigh 18.9°C · Low 10.4°C · 68 mm rain
- Hradec Králové in SeptemberCzechia · 102 kmHigh 18.7°C · Low 10.3°C · 59 mm rain
- Dresden in SeptemberGermany · 117 kmHigh 18.9°C · Low 11.0°C · 69 mm rain
- České Budějovice in SeptemberCzechia · 124 kmHigh 18.5°C · Low 10.1°C · 60 mm rain
- Jelenia Góra in SeptemberPoland · 129 kmHigh 17.8°C · Low 10.0°C · 74 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Prague) is explained once on the Prague year overview and on the Sources, method and limits page.